We're big fans of Audi at GearCulture, and the 2013 Audi RS6 Avant has us very excited. The hood hides a 4 liter TFSI V8 twin scroll supercharged engine, 560 hp and it will get you to 60mph in 4 seconds. At an impressive 220 pounds lighter than its predecessor, it's not only faster, but 40% more eco-friendly too. The sport suspension, exhaust, dynamic steering, 21 inch wheels and carbon fiber ceramic brakes means it'll be one of the smoothest rides out there.